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Peb yog cov kws tshaj lij PCB ntsia hlau davhlau ya nyob twg thaiv cov tuam txhab hauv Suav teb rau 30 xyoo, tshwj xeeb hauv kev muab cov khoom lag luam zoo thiab cov kev pabcuam. Peb sov siab txais tos koj mus yuav bulk siab - qib PCB ntsia hlau davhlau ya nyob twg thaiv kev muag khoom ntawm no los ntawm peb lub hoobkas.

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